cement {MASS} | R Documentation

## Heat Evolved by Setting Cements

### Description

Experiment on the heat evolved in the setting of each of 13 cements.

### Usage

    data(cement)

### Format

`x1, x2, x3, x4`
  Proportions (%) of active ingredients
`y`
  heat evolved in cals/gm

### Details

13 samples of Portland cement were set. For each sample, the percentages of the four main chemical ingredients was accurately measured. While the cement was setting the amount of heat evolved was also measured.

### Source

Woods, H., Steinour, H.H. and Starke, H.R. (1932) Effect of composition of Portland cement on heat evolved during hardening. Industrial Engineering and Chemistry, 24, 1207–1214.

### References

Hald, A. (1957) Statistical Theory with Engineering Applications. Wiley, New York.

### Examples

    lm(y ~ x1 + x2 + x3 + x4, cement)

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